NovaPep

Buy Retatrutide Starter Kit Australia: Retatrutide 10mg, 20mg or 30mg Research Kit With Diluent and Syringe

$134AUD, GST included

In stock in Australia, batch certificate ready

Certificate of analysis published for every batch
Third-party HPLC purity and MS identity testing
Dispatched same day before 3pm cut-off, tracked Australia-wide
Research use only, sold to adults aged 18 and over

Buy the Retatrutide Starter Kit online in Australia with a 10 mg, 20 mg or 30 mg research vial, bacteriostatic water and a syringe. The Retatrutide Starter Kit is one carton that pairs a retatrutide vial in your choice of 10 mg, 20 mg or 30 mg with the water and syringe needed to reconstitute it, supplied in Australia. Known in development as LY3437943, retatrutide is a synthetic peptide of 39 residues that engages the GIP, GLP-1 and glucagon receptors, and a C20 fatty diacid on the chain anchors it to albumin. Published identity data are C221H342N46O68, 4731.3 g/mol and CAS 2381089-83-2. Each carton also holds a 3 mL bacteriostatic water vial, preserved with benzyl alcohol, and a single U-100 1 mL insulin syringe. The peptide in every carton is drawn from a lot verified by mass spectrometry with purity measured by HPLC, and you can review that certificate before paying. Keep the retatrutide calculator handy to work out the concentration you get from the included water. If you are comparing dual against triple agonists, put tirzepatide in the same cart. Since the diluent is already in the box, the first reconstitution needs nothing extra, and the unopened peptide vial stores at -20 °C. Supplied as a research reagent to adults 18 and over, listed within our metabolic peptides range.

For laboratory research use only. Not for human or veterinary use. Not TGA approved. See the NovaPep research use policy.

What Is the Retatrutide Starter Kit?

Everything required to convert dry peptide into a measured solution for the first time sits in one carton. You get the retatrutide vial, a preserved diluent and a graduated syringe for transferring one into the other. The peptide is identical to the material on the retatrutide vial page, which covers the compound in depth, so here we focus on the two supporting items and the reasons behind them. You can order the Retatrutide Starter Kit online in Australia as a carton with a 10 mg, 20 mg or 30 mg vial, diluent and a syringe, and every lot ships with its own certificate.

Open the white and green carton and you will find three items. One is a labelled glass vial of lyophilised retatrutide, filled at 10, 20 or 30 mg according to the option chosen. Another is a 3 mL vial of clear bacteriostatic water preserved with 0.9% benzyl alcohol. The last is a sterile 1 mL U-100 insulin syringe, individually wrapped. Of the three, only the vial holds the research compound. The water is an ordinary multi-draw diluent and the syringe is the same U-100 style found at Australian chemists, as our overview of insulin syringes in Australia describes.

How Each Item in the Kit Works

First, the water. Bacteriostatic water is sterile water with a small amount of benzyl alcohol added, and the name describes exactly what it does. Rather than sterilising, the alcohol suppresses bacterial growth, so a stoppered vial can be pierced repeatedly over a few weeks and stay usable. Plain sterile water has no such safeguard and is used once and discarded, while saline brings sodium chloride that a peptide stock has no need for. When you plan to draw from a solution many times across several weeks, the preserved water is the logical choice, and our comparison of bacteriostatic and sterile water sets out the differences fully.

Making Sense of the U-100 Syringe in Your Reta Kit

Included is a 1 mL insulin syringe graduated on the U-100 scale, so 100 units equals exactly 1 mL. Each unit therefore represents 0.01 mL, or 10 microlitres, which is useful for measuring small volumes on the bench. The markings only tell you volume. How much retatrutide sits in that volume depends wholly on how much water you added to the vial. At 5 mg per mL, the 20-unit line carries 1 mg of peptide, and at double that strength the same line carries 2 mg.

The error we come across most with first-time kits is reading those units as a set quantity of compound. Label the vial with its concentration as soon as you mix it, and convert every volume using that figure. A second consideration applies to cell culture. Diluted into typical media, benzyl alcohol is only a small component, but sensitive cell lines may still react, so prepare a vehicle control using the same water. If you will use the entire vial within a day or two, plain sterile water avoids the issue completely.

Inside the Retatrutide Molecule

Retatrutide, much like tirzepatide, is built on a GIP-like backbone. Aminoisobutyric acid and alpha-methylated residues shield the sites DPP-4 would normally cut, the C-terminus carries an amide, and a lysine side chain links to a C20 fatty diacid. That lipid binds albumin reversibly, and published reports put the half-life at roughly six days.

What Researchers Use the Kit For

Eli Lilly, the American company that also produced tirzepatide, designed retatrutide, and its structure was published in the early 2020s. The molecule combines activity at receptors for three hormones from the gut and pancreas. That lets a lab pose a sharp question about what shifts when GIP, GLP-1 and glucagon signalling are all switched on at once instead of singly or in pairs. Labs planning similar studies can order the Retatrutide Starter Kit online in Australia, with identity and purity confirmed on every lot.

The carton handles the logistics. Plenty of first orders get held up because someone forgot the diluent or syringes, but here both ship inside the same white and green box. Everything in it is a research reagent unconnected to any medicine, and retatrutide is not registered as a medicine in any country. Browse more combined cartons in kits and bundles.

Retatrutide Starter Kit Specifications

Product	Retatrutide Starter Kit
Options	With 10 mg vial, with 20 mg vial, with 30 mg vial
Compound	Retatrutide (LY3437943), a triple agonist at the GIP, GLP-1 and glucagon receptors
Chain length	39 amino acids
Formula	C221H342N46O68
Molar mass	4731.3 g/mol
CAS	2381089-83-2
Format	Lyophilised peptide powder in a sealed glass vial, plus clear water in a separate stoppered vial
Analysis	Each retatrutide lot verified by mass spectrometry and HPLC, one certificate per lot
In the carton	A retatrutide vial in the fill you select, a 3 mL vial of bacteriostatic water (0.9% benzyl alcohol) and a sterile U-100 1 mL insulin syringe. Alcohol swabs are not included
Storage	Unopened peptide at -20 °C kept dry and dark, solution at 2 to 8 °C. The water and the syringe stay at room temperature until opened
Stock	In stock
Intended use	Laboratory in vitro research only

The carton suits a lab that does not yet stock a diluent. Its vial, water and syringe are the same items we sell individually, and the retatrutide comes from the same lots as our standalone vials.

Reading the Kit Certificate

When you read the certificate, check for a measured mass consistent with 4731.3 g/mol and the HPLC purity stated for that lot. The water and syringe are sterile consumables marked with lot and expiry, not analysed items. Find each report in the COA library using the lot number on the peptide label.

Handling and Storage of the Retatrutide Starter Kit

Allow the peptide vial to come to room temperature and swab both stoppers. Draw the water up with the included syringe, let it run gently down the inner wall of the vial, then swirl until the solution is clear. Taking the 20 mg fill as an example, 2 mL of water gives 10 mg per mL, and the retatrutide reconstitution calculator handles any other volume. Order the Retatrutide Starter Kit online in Australia and it travels by tracked Australia Post from our local stock.

Until it is mixed, store the peptide vial frozen at -20 °C in a dry, dark place, though the powder copes with a brief period at room temperature during shipping. After reconstitution keep it at 2 to 8 °C, ideally split into aliquots so no preparation is ever refrozen. Discard the water vial 28 days after it is first punctured.

Retatrutide Starter Kit Compared With the Vial, Pen and Tirzepatide

Where your bench is already stocked with bacteriostatic water and U-100 syringes, the standalone retatrutide vial is the more economical order. The carton is the smarter choice for a first purchase, or any time you want the diluent and syringe to turn up with the peptide. If you would rather avoid mixing entirely, consider the retatrutide pen.

To compare receptors, labs add tirzepatide, the dual GIP and GLP-1 agonist, sold as a 2 mg vial. Each peptide has 39 residues and a C20 chain, so running the two together singles out what the glucagon receptor adds. Our retatrutide vs tirzepatide guide compares them directly.

Other Names for the Retatrutide Starter Kit

You may see this carton called the retatrutide kit or reta kit, while the peptide inside is listed as retatrutide, LY3437943 or just reta. All of these names point to the same 39-residue chain, CAS 2381089-83-2.

The receptors have terminology of their own. GLP-1 means glucagon-like peptide-1. GIP was first called gastric inhibitory peptide and later became glucose-dependent insulinotropic polypeptide without any change to its sequence. GCGR refers to the glucagon receptor. In the literature retatrutide sits among the triple agonists, also called tri-agonists, whereas tirzepatide is described as a dual agonist.

Regulatory Status of Retatrutide in Australia

Regulation is relevant only to the peptide. As of October 2026 retatrutide is not listed on the ARTG, which means no pharmacy or clinic in Australia is able to supply a kit containing it. On 14 September 2026 the TGA released testing of a product sold as retatrutide in an unmarked vial. It contained no retatrutide whatsoever, and instead held undeclared semaglutide at about eight times the amount present in registered semaglutide products.

Why That Test Result Matters

There is no way to trace an unmarked vial, and a purity check by itself would have missed the substitution, since semaglutide weighs in around 4114 g/mol and retatrutide around 4731 g/mol. Each peptide vial we pack in a kit has a printed lot code, and every lot has a mass spectrometry identity result on record. NovaPep stocks the reta kit in Australia in all three fills, ready to order online for laboratory research by adults 18 and over. It is not supplied for human or veterinary use, and you can browse the lot certificate archive before checkout.

Buy the Retatrutide Starter Kit Online in Australia

Every carton contains the same water vial and syringe, and the only variable is the peptide fill. Cost per milligram drops as the fill increases, so the 30 mg carton is the best value per milligram.

10 mg works as a starting carton for a pilot study. Adding 2 mL of the included water produces 5 mg per mL with 1 mL left over.
20 mg is our best seller, because 2 mL produces an even 10 mg per mL and keeps the maths at the bench easy.
30 mg is aimed at established protocols. Adding the full 3 mL also produces 10 mg per mL but uses up the water vial, so order an extra bacteriostatic water vial for headroom.

Every carton costs less than buying the vial, water and syringe separately. When you order several cartons for an extended series, we pack them from a single retatrutide lot wherever stock permits, so one certificate covers the whole project. Only adults aged 18 and over may purchase.

Because retatrutide is investigational, you will not find a kit at any pharmacy or clinic. NovaPep sells online only, with no counter or collection point, and delivers from Australian stock to every state and territory. If a carton is paid for before 3pm on a business day, it is dispatched that same day, and transit times are listed under delivery information.

Retatrutide Starter Kit at a Glance

Triple Agonist Plus Diluent

Each carton combines a retatrutide vial, a 39-residue agonist of the GIP, GLP-1 and glucagon receptors, with the water and syringe required for reconstitution.

Pick From Three Fills

Order the 10 mg, 20 mg or 30 mg kit. All include 3 mL of bacteriostatic water and one syringe.

Research Across Three Receptors

Labs use retatrutide in cell-based receptor pharmacology and rodent metabolic models, alongside single and dual agonists. For laboratory use only.

Carton Versus Vial Alone

If you already have water and syringes, the vial alone is the simpler order. The kit brings peptide, diluent and syringe together in one carton.

Frozen Powder, Chilled Solution

Store the unopened peptide at -20 °C. After reconstitution, keep it at 2 to 8 °C in aliquots and do not refreeze.

Peptide Lot Certificate

Each retatrutide lot is verified by mass spectrometry and measured by HPLC, and its report is available in the COA library.

Retatrutide Starter Kit FAQ

What does the bacteriostatic water in the kit do?

It is sterile water with 0.9% benzyl alcohol. The alcohol does not sterilise, but it suppresses bacterial growth, so the stoppered vial can be pierced repeatedly over a few weeks. Discard the water vial 28 days after it is first punctured.

Is there a retatrutide kit near me that I can buy in person?

No, you order it online from NovaPep. Pick the 10 mg, 20 mg or 30 mg carton, and kits paid for before 3pm on a business day leave Australian stock the same day for any state or territory. Pharmacies and clinics cannot sell retatrutide kits since the peptide is investigational, and NovaPep has no shopfront.

What size Retatrutide Starter Kit is best to buy?

For most first orders the 20 mg carton is the one to choose, as 2 mL of the included water produces an even 10 mg per mL. A pilot study fits the 10 mg carton, while the 30 mg carton gives the lowest price per milligram for established protocols running at a steady rate.

Is there a certificate of analysis with the reta kit?

Yes. The retatrutide vial belongs to a lot with its own certificate, where mass spectrometry confirms the 4731.3 g/mol mass and HPLC records purity. You will find the report in the COA library under the lot number printed on the vial. The water and syringe are sterile consumables marked with lot and expiry.

Is the retatrutide kit or tirzepatide the better order?

Pick retatrutide if your study requires the glucagon receptor to be activated as well as GIP and GLP-1, and choose tirzepatide if you only need the dual agonist. Each is a 39-residue peptide carrying a C20 fatty chain, so buying both lets one comparison isolate what the glucagon pathway contributes.

How is the retatrutide carton used in the lab?

It provides retatrutide ready to reconstitute for in vitro receptor studies, packed with bacteriostatic water and a U-100 syringe. NovaPep supplies it purely as research material to buyers aged 18 and over. Retatrutide is not a registered medicine and must not be used in humans or animals.